1. Which statement about the function of cell parts is true? * Animal cells have a cell wall.
a .
Mitochondria is the powerhouse of the cell.
The nucleus is the protective, rigid, outer layer of the cell.
All of the above

Select the correct answer. which mutation is harmful to the organism? a. a mutation allowing moths to camouflage better on blackened tree bark b. a mutation making staphylococcus aureus resistant to the antibiotic methicillin c. a mutation inhibiting human immunodeficiency virus from attaching to and entering the cell d. a mutation causing uncontrolled cell division e. a mutation giving plant leaves a bitter taste to discourage herbivores from eating them